This randomised controlled trial aimed to verify whether directly observed single dose treatment (with tinidazole+fluconazole) would be as effective as the longer standard treatments (metronidazole for 7 days, plus vaginal clotrimazole for 3 days) in the syndromic management of women presenting with vaginal discharge in primary health care centers of Ghana, Togo, Guinea and Mali. It was designed as an effectiveness trial, i.e. it was done under conditions typical of routine work in these health centers